DE4206066A1 - Propeller or rotor blades - are designed to reduce eddies and air or water resistance and have toothed leading and trailing edges - Google Patents

Propeller or rotor blades - are designed to reduce eddies and air or water resistance and have toothed leading and trailing edges

Info

Publication number
DE4206066A1
DE4206066A1 DE19924206066 DE4206066A DE4206066A1 DE 4206066 A1 DE4206066 A1 DE 4206066A1 DE 19924206066 DE19924206066 DE 19924206066 DE 4206066 A DE4206066 A DE 4206066A DE 4206066 A1 DE4206066 A1 DE 4206066A1
Authority
DE
Grant status
Application
Patent type
Prior art keywords
blades
propeller
leading
relative
designed
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
DE19924206066
Other languages
German (de)
Inventor
Fritz Karl Hausser
Original Assignee
Fritz Karl Hausser
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B64AIRCRAFT; AVIATION; COSMONAUTICS
    • B64CAEROPLANES; HELICOPTERS
    • B64C11/00Propellers, e.g. of ducted type; Features common to propellers and rotors for rotorcraft
    • B64C11/16Blades
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63HMARINE PROPULSION OR STEERING
    • B63H1/00Propulsive elements directly acting on water
    • B63H1/02Propulsive elements directly acting on water of rotary type
    • B63H1/12Propulsive elements directly acting on water of rotary type with rotation axis substantially in propulsive direction
    • B63H1/14Propellers
    • B63H1/26Blades
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B64AIRCRAFT; AVIATION; COSMONAUTICS
    • B64CAEROPLANES; HELICOPTERS
    • B64C3/00Wings
    • B64C3/10Shape of wings
    • B64C3/14Aerofoil profile
    • B64C2003/146Aerofoil profile comprising leading edges of particular shape
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B64AIRCRAFT; AVIATION; COSMONAUTICS
    • B64CAEROPLANES; HELICOPTERS
    • B64C2230/00Boundary layer controls
    • B64C2230/20Boundary layer controls by passively inducing fluid flow, e.g. by means of a pressure difference between both ends of a slot or duct
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T50/00Aeronautics or air transport
    • Y02T50/10Drag reduction
    • Y02T50/16Drag reduction by influencing airflow
    • Y02T50/166Drag reduction by influencing airflow by influencing the boundary layer

Abstract

The low eddy loss blades may be used for propellers for water craft and aircraft, and for rotors for helicopters. Each blade has pointed teeth (A) along the edge on either side. The number, size, shape, width, and relative distance of the blades is dependent upon the size of the propeller, rotor, etc. The relative angular position of the blades is adjustable, and this increases the blade surface. USE/ADVANTAGE - Toothed leading and trailing edges on propeller blades are designed to reduce thrust force losses.

Description

Stand der Technik State of the art

Es ist bekannt, daß im Schiffs- und Flugzeugbau Schrauben und Propeller mit starren oder beweglichen Blättern verwendet werden. It is known that propeller screws and be used with rigid or movable leaves in the ship- and aircraft. Ebenso verhält es sich beim Hubschrauberbau, wobei man Rotoren mit beweglichen Blättern benutzt. The same is true in helicopter construction, wherein one uses rotors with movable leaves. Alle og Blätter haben gerade Kanten. All of the above leaves straight edges.

Problem problem

Der angegebenen Erfindung liegt das Problem zugrunde, den Wasser- bzw. Luftwiderstand bei der Schrauben-, Propeller- bzw. Rotordrehung zu vermindern. The given invention is based on the problem of reducing the water or air resistance at the screw, propeller or rotor rotation.

Erzielbare Vorteile achievable benefits

Herkömmliche Boots- oder Schiffs-Schrauben verlieren an Schubkraft, wenn sie mit hoher Geschwindigkeit rotieren. Conventional boat or ship screws keep momentum when rotating at high speed.

Die mit der Erfindung erzielten Vorteile bestehen insbesondere darin, daß die gezahnte Schraube diesen Schubkraft-Verlust verringert, indem sie das Wasser sanfter und leichter mit den Spitzzähnen an der forderen Kante schneidet. The advantages achieved with the invention consist in particular in that the serrated screw reduces this thrust force loss by the water smoother and easier intersects with the pointed teeth on the forderen edge. Durch die Spitzzähne an der hinteren Kante wird der entstehende Wirbel verringert. Due to the pointed teeth on the rear edge of the resulting vortex is reduced.

Die Spitzzähne an den Kanten der Schrauben haben den Vorteil, daß die Fläche der Schrauben- Blätter vergrößert werden kann, da die Winkel stellung der Blätter zueinander optimiert werden kann. The pointed teeth on the edges of the screws have the advantage that the surface of the screw blades can be increased, since the angular position of the blades can be optimized to each other.

Das Gleiche passiert mit den Flugzeugpropellern und den Hubschrauber-Rotor-Blättern, da der vordere gezahnte Rand die Luft sanfter und leichter schneidet und der hintere gezahnte Teil die Luftwirbelbildung herabsetzt. The same happens to the aircraft propellers and the helicopter rotor blades, since the front toothed edge of the air smoother and easier cuts and the rear toothed member reduces the air turbulence. Aufgrund dieser Erfindung können die Propeller- und die Rotorblätter verbreitet und deren Winkelstand optimiert werden. Because of this invention, the propeller and the rotor blades can spread and their angle stand to be optimized.

Dadurch wird die Rotor-Leistung deutlich verbessert. Thereby, the rotor performance is significantly improved.

Form, Länge, Breite, Abstand und Ausrichtung der Zähne sowie die Anzahl der Zahnreihen hängt von der Größe der Schraube, des Propellers und des Rotorblattes ab. Shape, length, width, spacing and orientation of the teeth as well as the number of rows of teeth will depend on the size of the screw, of the propeller and the rotor blade.

Ausführungsbeispiel embodiment

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt. An embodiment of the invention is illustrated in the drawing.

Claims (1)

  1. Oberbegriff Boots-Schrauben, Flugzeug-Propeller, Hubschrauber-Rotor-Blätter. Preamble Boat screws, aircraft propellers, helicopter rotor blades. Kennzeichnender Teil Signing Part Beidseitig spitz-gezahnte Boots-Schrauben, Flugzeug-Propeller und Hubschrauber-Rotor- Blätter zur Verringerung des Wasser- bzw. Luftwiderstandes beim Antrieb und zur Reduzierung des normalerweise entstehenden Wirbels. Both sides sharp-toothed Boat screws, aircraft propeller and helicopter rotor blades for reducing the water or air resistance when the drive and to reduce the normally resulting vortex.
DE19924206066 1992-02-27 1992-02-27 Propeller or rotor blades - are designed to reduce eddies and air or water resistance and have toothed leading and trailing edges Withdrawn DE4206066A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19924206066 DE4206066A1 (en) 1992-02-27 1992-02-27 Propeller or rotor blades - are designed to reduce eddies and air or water resistance and have toothed leading and trailing edges

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19924206066 DE4206066A1 (en) 1992-02-27 1992-02-27 Propeller or rotor blades - are designed to reduce eddies and air or water resistance and have toothed leading and trailing edges
DE19924208751 DE4208751A1 (en) 1992-02-27 1992-03-20 Reducing resistance to aerofoil or hydrofoil passing through medium e.g. air or water - uses array of teeth formed on leading and/or trailing edge of aerofoil or hydrofoil section

Publications (1)

Publication Number Publication Date
DE4206066A1 true true DE4206066A1 (en) 1993-09-02

Family

ID=6452741

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19924206066 Withdrawn DE4206066A1 (en) 1992-02-27 1992-02-27 Propeller or rotor blades - are designed to reduce eddies and air or water resistance and have toothed leading and trailing edges

Country Status (1)

Country Link
DE (1) DE4206066A1 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9316009U1 (en) * 1993-10-20 1994-01-13 Moser Josef Surface of a body fluidumströmten
DE102009035689A1 (en) * 2009-07-30 2011-02-03 Eads Deutschland Gmbh Fluid-dynamic effective rotor e.g. propeller, for use in e.g. ship, has contour regions arranged in relationship e.g. coincidental relationship, of part of rotor blades so that regions blow-out waves of specific wavelength and frequency
CN102673758A (en) * 2012-05-15 2012-09-19 哈尔滨工程大学 Propeller with convex and concave guide edge
CN102991658A (en) * 2012-12-06 2013-03-27 哈尔滨工程大学 Bionic propeller of ship
WO2013130163A1 (en) * 2011-12-22 2013-09-06 General Electric Company Airfoils and corresponding fabricating method
GB2507493A (en) * 2012-10-30 2014-05-07 Solyvent Flakt Ab Air movement fan with protrusions on the leading and trailing edges of the blades
CN104044718A (en) * 2013-03-12 2014-09-17 张建新 Sawtooth propeller

Citations (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE175477C (en) *
DE311050C (en) *
US997587A (en) * 1909-09-17 1911-07-11 Otto E Kuehl Propeller.
US1446011A (en) * 1921-07-05 1923-02-20 Jackson Robert Cattley Propeller
DE483965C (en) * 1925-11-24 1929-10-08 Cierva Autogiro Comp Ltd Plane with freely rotating, driven by the wind pressure wings
DE493436C (en) * 1924-08-16 1930-03-10 Sven Lindequist Flugzeugtrag- or -triebfluegel
US2020235A (en) * 1933-01-26 1935-11-05 Bradbury John Hinchcliffe Rotor screw suitable for helicopters
US2918128A (en) * 1955-08-08 1959-12-22 George E Mallinckrodt Propeller
US3199603A (en) * 1965-01-25 1965-08-10 Margolis Isadore Curved rotor blades
US3283829A (en) * 1963-09-12 1966-11-08 Aumarechal Jaques Propeller
DE6940421U (en) * 1969-10-13 1970-04-16 Heinrich Hennigs Propellers with reduced drag
US4168939A (en) * 1977-09-08 1979-09-25 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Acoustically swept rotor
DE3137554A1 (en) * 1981-09-22 1983-03-31 Gebhardt Gmbh Wilhelm "Radial ventilator"
DE2636056C2 (en) * 1976-08-11 1983-07-21 Rhein-Flugzeugbau Gmbh, 4050 Moenchengladbach, De
DE2621982C2 (en) * 1975-05-19 1987-08-13 Westland Aircraft Ltd., Yeovil, Somerset, Gb
DE3710691A1 (en) * 1987-03-31 1988-10-13 Josef Kecur Surface coating for aerodynamically active parts
DE9013099U1 (en) * 1990-09-14 1991-11-07 Moser, Josef, 8058 Pretzen, De
US5069403A (en) * 1985-05-31 1991-12-03 Minnesota Mining And Manufacturing Company Drag reduction article
EP0482932A1 (en) * 1990-10-24 1992-04-29 Westland Helicopters Limited Helicopter rotor blades

Patent Citations (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE175477C (en) *
DE311050C (en) *
US997587A (en) * 1909-09-17 1911-07-11 Otto E Kuehl Propeller.
US1446011A (en) * 1921-07-05 1923-02-20 Jackson Robert Cattley Propeller
DE493436C (en) * 1924-08-16 1930-03-10 Sven Lindequist Flugzeugtrag- or -triebfluegel
DE483965C (en) * 1925-11-24 1929-10-08 Cierva Autogiro Comp Ltd Plane with freely rotating, driven by the wind pressure wings
US2020235A (en) * 1933-01-26 1935-11-05 Bradbury John Hinchcliffe Rotor screw suitable for helicopters
US2918128A (en) * 1955-08-08 1959-12-22 George E Mallinckrodt Propeller
US3283829A (en) * 1963-09-12 1966-11-08 Aumarechal Jaques Propeller
US3199603A (en) * 1965-01-25 1965-08-10 Margolis Isadore Curved rotor blades
DE6940421U (en) * 1969-10-13 1970-04-16 Heinrich Hennigs Propellers with reduced drag
DE2621982C2 (en) * 1975-05-19 1987-08-13 Westland Aircraft Ltd., Yeovil, Somerset, Gb
DE2636056C2 (en) * 1976-08-11 1983-07-21 Rhein-Flugzeugbau Gmbh, 4050 Moenchengladbach, De
US4168939A (en) * 1977-09-08 1979-09-25 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Acoustically swept rotor
DE3137554A1 (en) * 1981-09-22 1983-03-31 Gebhardt Gmbh Wilhelm "Radial ventilator"
US5069403A (en) * 1985-05-31 1991-12-03 Minnesota Mining And Manufacturing Company Drag reduction article
DE3710691A1 (en) * 1987-03-31 1988-10-13 Josef Kecur Surface coating for aerodynamically active parts
DE9013099U1 (en) * 1990-09-14 1991-11-07 Moser, Josef, 8058 Pretzen, De
EP0482932A1 (en) * 1990-10-24 1992-04-29 Westland Helicopters Limited Helicopter rotor blades

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
DE-Z: Schiffbautechnik 17 11/1967,S.660 *
JP 56-39991 A. In: Patents Abstracts of Japan, M-74, June 17,1981,Vol.5,No.93 *

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9316009U1 (en) * 1993-10-20 1994-01-13 Moser Josef Surface of a body fluidumströmten
US5860626A (en) * 1993-10-20 1999-01-19 Moser; Josef Surface of a body exposed to circumfluent fluid
DE102009035689A1 (en) * 2009-07-30 2011-02-03 Eads Deutschland Gmbh Fluid-dynamic effective rotor e.g. propeller, for use in e.g. ship, has contour regions arranged in relationship e.g. coincidental relationship, of part of rotor blades so that regions blow-out waves of specific wavelength and frequency
WO2013130163A1 (en) * 2011-12-22 2013-09-06 General Electric Company Airfoils and corresponding fabricating method
US9249666B2 (en) 2011-12-22 2016-02-02 General Electric Company Airfoils for wake desensitization and method for fabricating same
CN102673758A (en) * 2012-05-15 2012-09-19 哈尔滨工程大学 Propeller with convex and concave guide edge
CN102673758B (en) * 2012-05-15 2015-06-17 哈尔滨工程大学 Propeller with convex and concave guide edge
GB2507493A (en) * 2012-10-30 2014-05-07 Solyvent Flakt Ab Air movement fan with protrusions on the leading and trailing edges of the blades
GB2507493B (en) * 2012-10-30 2015-07-15 Solyvent Flakt Ab Air movement fans
CN102991658A (en) * 2012-12-06 2013-03-27 哈尔滨工程大学 Bionic propeller of ship
CN102991658B (en) * 2012-12-06 2015-09-30 哈尔滨工程大学 Bionic ship propeller
CN104044718A (en) * 2013-03-12 2014-09-17 张建新 Sawtooth propeller

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